Hose.



E. WITZENMANN.

HOSE.

APPLICATION FILED OUT. 26, 1907.

Patented Oct. 25, 1910.

' upon itself.

a, c and b, d respectively are made with the UNITED STATES. P ENTOFFICE.

EMIL WITZENMANN, 0F PFORZHEIM, GERMANY.

HOSE.

To all whom it may concern:

Be it known that I, EMIL WVITZENMANN, manufacturer, a subject of theGrand Duke of Baden, residing at No. 48 Holz'gartenstrasse, Pforzheim,German Empire, have invented new and useful Improvements in Hose, ofwhich the following is a specification.

emplo ed for the brake-. and heating-pipes of r'ai road cars.

Figure 1 is a longitudinal section through the terminal portions of ahose with conling members. Fig. 2 shows a detail to be erelnafterreferred to.

a, b are the usual coupling-pieces, into which theendieces c, d of thehose e are screwed. The liosehere shown by way of exampleis a so-calledmetallic spiral hose, that 15 to say, a flexible pipe consisting of ametal tape .of suitableeross section wound The joints between the parts111d of askets f, The latter are quite shut in the provision of a li g,h on the arts 0, respectively, so that it is impossilile for fragmentsof the packing material to get torn off and drawn alon by the pressureagent. To prevent acci ental loosening of the parts a, c and b, dlock-nuts i, j are employed.

The end-pieces 0, ll ofthe hose e are each furnished with an annularinternal rib is, 4% against which bear the crossor bridgeleces'n, 0, oneof which is shown separately in Fig. 2. The pieces n, 0 are'- rovidedwith central apertures p,"r throng which them pass the threadedeye-bolts s, t, to which the,ends of a suitable li nient as a. rope uare attached. The eye- )olts are retained by small nuts n, w.

Since the end-pieces a, (l are, connected by the rope u, it is obviousthat the hose 0 is Specification of Letters Patent.

covering of wirework and may thereof presenting Patented Oct. 25, 1910.

application filed October 26, 1907. Serial No. 399,290.

relieved of-all strain, which is transmitted wholly to the parts 0, d.In this manner all danger of the mutually engagin coils of the metallichose being torn asun er is effectively obviated, and the durability ofthe hose thus reatly augmented. It will also be ObSGI'VEf that theprocedure of connecting the rope to the bridges n, 0 is exceedinglysimple. 1

The metal hose e-may, if desired, receive an external covering toprotect it from possible injury. In the articular constructionillustrated, the hose 1S sheathed'with wire gauze m. The latter mayreceive a further also be armored with spirally wound wlre or with asecond metallic hose.

Having thus described my invention, what I claim as new is 1. Incombination, flexible spirally wound metallic tubing, connecting piecesat the ends (projections, cross pieces movable within sai connectingpieces and bearing against said projections, said cross pieces formingloose bridges movable within the connecting pieces and havin centralapertures, adjustable means passe through said apertures and flexiblemeans connecting said adjustable means and extending throu h saidconnecting pieces and the metal ie tubing. 2. n combination flexiblespirally wound metallic tubing, coupling pieces, end pieces screwedthereinto and havin projecting lips, gaskets surrounding said 11 s, locknuts for said coupling pieces and en pieces, said end pieces ha'vlng.annular internal ribs,

bridge pieces bearing a ainst said ribs and looselyinclosed within theend pieces, means adjustably held in said bridge plcces and extendedtoward each other, and flexible means joining, the adjacent ends of saidadjustable means and disposed within the metallic tubing.

In witness whereof ;I have hereunto signed my name this 10th da ofOctober 1907, in the presence of two sh )scribing witnesses.

EMIL W'I'IZENMANN.

Wit ncsscs B. WI'IZENMANN, .Enans'r. ENTEMANN.

